Impeller mounting structure of air conditioning device

ABSTRACT

An impeller mounting structure of air conditioning device is provided, including an electric machine arranged between a condenser and an evaporator and a condenser impeller and an evaporator impeller. The electric machine is mounted to an air duct casing of the condenser. The condenser impeller and the evaporator impeller are mounted to a shaft of the electric machine at the same side of the electric machine. A central air duct casing is arranged between the condenser impeller and the evaporator impeller. The evaporator impeller is mounted inside the evaporator air duct casing. The condenser impeller and the evaporator impeller are provided with mated self-locking structures. The mounting structure provides the efficacies that the impeller mounting structure of air conditioning device makes the manufacturing and assembling simplified, the size of a movable air conditioning device reduced, balance of electric machine in operation enhanced, and the number of parts assembled reduced.

TECHNICAL FIELD OF THE INVENTION

The present invention generally relates to a movable air conditioningdevice, and more particularly to an impeller mounting structure of amovable air conditioning device.

DESCRIPTION OF THE PRIOR ART

Heretofore, the ways for mounting an impeller or a movable airconditioning device are (1) that impellers are respectively mounted toan electric machine of a condenser or an electric machine of anevaporator, the being disadvantageous in that two electric machines areused to respectively coupled to air ducts, leading to high cost andcomplicated assembling; (2) that a single electric machine is used andimpellers are respectively coupled to opposite ends of the electricmachine, this being disadvantageous in that the electric machine mustprovide an extended shaft and poor balance often results in theoperation of the electric machine, the size is bulky, and assembling iscomplicated. Further, the inside and outer air duct cases areconstituted by four components.

Thus, it is a challenge for the development of the industry to provide asolution to overcome such problems of the existing devices.

SUMMARY OF THE INVENTION

In view of the above discussed problems, the present invention aims toprovide a structure for mounting inside and outside impeller of amovable air conditioning device, which allows for easy assembling with aless amount of components used.

The technical solution provided by the present invention is as follows:

An impeller mounting structure of air conditioning device ischaracterized by comprising an electric machine arranged between acondenser and an evaporator and a condenser impeller and an evaporatorimpeller, wherein the electric machine is mounted to an air duct casingof the condenser; the condenser impeller and the evaporator impeller aremounted to a shaft of the electric machine at the same side of theelectric machine; a central air duct casing is arranged between thecondenser impeller and the evaporator impeller; the evaporator impelleris mounted inside the evaporator air duct casing; and the condenserimpeller and the evaporator impeller are provided with matedself-locking means.

The self-locking means adopted in the present invention comprises aprojection formed on the condenser impeller or the evaporator impellerand a recess formed in the evaporator impeller or the condenser impellerto receive the project to fit therein.

The present invention provides the efficacies that the impeller mountingstructure of air conditioning device makes the manufacturing andassembling simplified, the size of a movable air conditioning devicereduced, balance of electric machine in operation enhanced, and thenumber of parts assembled reduced.

The foregoing objectives and summary provide only a brief introductionto the present invention. To fully appreciate these and other objects ofthe present invention as well as the invention itself, all of which willbecome apparent to those skilled in the art, the following detaileddescription of the invention and the claims should be read inconjunction with the accompanying drawings. Throughout the specificationand drawings identical reference numerals refer to identical or similarparts.

Many other advantages and features of the present invention will becomemanifest to those versed in the art upon making reference to thedetailed description and the accompanying sheets of drawings in which apreferred structural embodiment incorporating the principles of thepresent invention is shown by way of illustrative example.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view, partially broken, illustrating ashaft-side structure of a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view of the preferred embodiment of thepresent invention.

FIG. 3 is a cross-sectional view showing details of a self-lockingstructure of the preferred embodiment of the present invention.

FIG. 4 is a perspective view, partially broken, illustrating ashaft-side structure of another embodiment of the present invention.

FIG. 5 is a cross-sectional view of said another embodiment of thepresent invention.

FIG. 6 is a cross-sectional view showing details of a self-lockingstructure of said another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following descriptions are exemplary embodiments only, and are notintended to limit the scope, applicability or configuration of theinvention in any way. Rather, the following description provides aconvenient illustration for implementing exemplary embodiments of theinvention. Various changes to the described embodiments may be made inthe function and arrangement of the elements described without departingfrom the scope of the invention as set forth in the appended claims.

Referring to FIGS. 1-3, which are respectively a perspective viewshowing a shaft-side structure of a preferred embodiment according tothe present invention, a cross-sectional view of the preferredembodiment of the present invention, and a cross-sectional view showingdetails of a self-locking structure of the preferred embodiment of thepresent invention, as shown in the drawings, the present inventionprovides an impeller mounting structure of air conditioning device,which comprises an electric machine 2 arranged between a condenser 1 andan evaporator 11 and a condenser impeller 4 and an evaporator impeller6. The electric machine 2 is mounted to an air duct casing 3 of thecondenser. The condenser impeller 4 and the evaporator impeller 6 aremounted to a shaft of the electric machine at the same side of theelectric machine 2. A central air duct casing 5 is arranged between thecondenser impeller 4 and the evaporator impeller 6. The evaporatorimpeller 6 is mounted inside an air duct casing 7 of the evaporator. Thecondenser impeller 4 and the evaporator impeller 6 are provided withmated self-locking structures 12.

As shown in the drawings, the self-locking structures 12 adopted in thepresent invention comprise a projection 121 formed on the evaporatorimpeller 6 and a recess 122 formed in the condenser impeller 4 toreceive the project 121 to fit therein. It is apparent that theprojection 121 can be alternatively formed on the condenser impeller 4and the recess 122 formed in the evaporator impeller 6.

To assemble, the electric machine 2 is attached to the condenser airduct casing 3 and the condenser impeller 4 and the central air ductcasing 5 are sequentially mounted with the central air duct casing 5being fixed to the condenser air duct casing 3 with bolts. Afterwards,the evaporator impeller 6, an impeller retaining member 8, a springwasher 9, and a nut 10 are sequentially mounted and the self-lockingstructures 12 of the two impellers are set to align with each other andthe nut 10 is tightened with a tool. Finally, the evaporator air ductcasing 7 is set and fixed to the central air duct casing 5.

Referring to FIGS. 4-6, which are respectively a perspective viewshowing a shaft-side structure of another embodiment according to thepresent invention, a cross-sectional view of said another embodiment ofthe present invention, and a cross-sectional view showing details of aself-locking structure of said another embodiment of the presentinvention, as shown in the drawings, the second solution of theembodiment according to the present invention comprises an electricmachine 2 arranged between a condenser 1 and an evaporator 11 and acondenser impeller 4 and an evaporator impeller 6. The electric machine2 is mounted to an air duct casing 7 of the evaporator. The condenserimpeller 4 and the evaporator impeller 6 are mounted to a shaft of theelectric machine at the same side of the electric machine 2. A centralair duct casing 5 is arranged between the condenser impeller 4 and theevaporator impeller 6. The evaporator impeller 6 is mounted inside anair duct casing 7 of the evaporator. The condenser impeller 4 and theevaporator impeller 6 are provided with mated self-locking structures12.

As shown in the drawings, the self-locking structures 12 adopted in thepresent invention comprise a projection 121 formed on the evaporatorimpeller 6 and a recess 122 formed in the condenser impeller 4 toreceive the project 121 to fit therein. It is apparent that theprojection 121 can be alternatively formed on the condenser impeller 4and the recess 122 formed in the evaporator impeller 6.

To assemble, the electric machine 2 is attached to the evaporator airduct casing 7 and the evaporator impeller 6 and the central air ductcasing 5 are sequentially mounted with the central air duct casing 5being fixed to the evaporator air duct casing 7 with bolts. Afterwards,the condenser impeller 4, an impeller retaining member 8, a springwasher 9, and a nut 10 are sequentially mounted and the self-lockingstructures 12 of the two impellers are set to align with each other andthe nut 10 is tightened with a tool. Finally, the condenser air ductcasing 3 is set and fixed to the central air duct casing 5.

It will be understood that each of the elements described above, or twoor more together may also find a useful application in other types ofmethods differing from the type described above.

While certain novel features of this invention have been shown anddescribed and are pointed out in the annexed claim, it is not intendedto be limited to the details above, since it will be understood thatvarious omissions, modifications, substitutions and changes in the formsand details of the device illustrated and in its operation can be madeby those skilled in the art without departing in any way from the spiritof the present invention.

1. An impeller mounting structure of air conditioning device characterized by comprising an electric machine arranged between a condenser and an evaporator and a condenser impeller and an evaporator impeller, wherein the electric machine is mounted to an air duct casing of the condenser or an air duct casing of the evaporator; the condenser impeller and the evaporator impeller are mounted to a shaft of the electric machine at the same side of the electric machine; a central air duct casing is arranged between the condenser impeller and the evaporator impeller; the evaporator impeller is mounted inside the evaporator air duct casing; and the condenser impeller and the evaporator impeller are provided with mated self-locking structures.
 2. The impeller mounting structure of air conditioning device according to claim 1, wherein the self-locking structures comprise a projection formed on the condenser impeller or the evaporator impeller and a recess formed in the evaporator impeller or the condenser impeller to receive the project to fit therein. 